William m



w. M. HoRToN. ELECTRIC SIGN'AL'ING DEVICE.

APPLICATION FILED .IULY I9, 1916.

and May 20, 1919.

WILLIAM M. HORTON, OF CLEVELAND, OHIO, ASSIGNOR TO THE ADAMS-BAGNALL ELECTRIC CO., OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

ELECTRIC SIGNALING DEVICE.

Specication of Letters Patent.

Patented May 20, 1919.

Application filed July 19, 1916. Serial No. 110,025.

To all whom it may concern:

Be it known that I, WILLIAM M. Hon'roN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Electric Signaling Devices, of which the following is a full, clear, and exact description.

This invention relates to an electrically operated signaling device, commercially termed a horn, wherein a solenoid and armature are electrically energized, and cause a series of blows to be imparted to a diahragm.

The object of the invention is to provide a horn of the character described, whereinthe construction is simple and may be manufactured at a low cost.

Generally speaking, the invention may be said to comprise the elements and combinations thereof set forth in the accompanying claims.

Reference should.be had to the` accompanying drawings forming a part of this specification, in which Figure 1 is a side elevation with portions in section; Fig. 2 is an end elevation showing the casing which houses the working parts of the horn sections; Fig. 3 is a section on the line 3-3 of Fig. 2; Fig. 4 is a side elevation with parts in section showing a portion of the construction of the horn.

The horn comprises a base plate 1, which is formed with a central opening indicated at 2. This opening is adapted to receive an amplifier 3, the amplifier being fastened to the base plate 1 in the opening by pressing the edge of the amplifier around the base as indicated at 4 in Fig. 1.

The base is provided with an upturned portion indicated at 5, and upon this upturned portion there is laid a diaphragm 6.

There is also provided a supporting plate 7, which at its outer edge is folded around the portion 5 of the base 1, and also bears against the diaphragm 6 adjacent the edge At substantially the center of the support- This pai-t8 is formed of a stri of metall which is stamped and drawn to su stantially the shape shown in Fig. 1, having the bottom portion 9 and the upturned portion 8a and 8. There is a bottom' portion 9 which rests against the sup orting plate 7. This portion 9 is providIdd with an opening which registers in a similar opening in a supporting plate 7 and through the two openings there extends a cylindrical member 10 which has a shoulder indicated at 11, which shoulder engages with the bottom 9. After this cylindrical member 10 is inserted through the openings as described, the end of the pipe is turned up as indicated at 12, thus holding the member 8 and the cylindri cal member 10 firmly connected with the supporting plate 7.

The member 8 is provided with an outwardly extending portion 8, and with a ledge or table portion 8l. At its forward eiid'the member 8 is provided with an upwardly extending portion 8c which also has a ledge'Sd. Upon the ledge 8b there is supporteda spring member 13vto which is se-v cured the armature 14. Upon the .spring member 13 there is a contact carrying member 15. This member is insulated from the spring member 13. This member 15 carries the contact 16.

Above the member 15 there is a spring member 17 which carries. the contact 18. The several members are held to the pors tion 8b by means of screws one of which is indicated at 19. `These screwsv extend through suit-able openings provided in the various members 17, 15 and 13, and the screws engage with .a plate 20 which lies beneath the portion 8b. Suitable insulating material is provided So that the, screws are insulated from the spring contact member 17, and t-he holes in these various members through which the screws extend are suiiiciently large so that the screws are out of contact with the members through the holes or openings in which the screws extend.

Upon the armature there is carried a cross member 2]., and beneath this cross member the spring contact member 15 extends. This construction is provided so that the contact between the contacts 16 and 18 is positively broken by the movement'of the armature toward the electromagnet.

Surrounding the tubular member 10 is a coil 22. This coil isof such size as to snugly fit upon-the tube. It is insulated from the bottom 9 ofthe member 8, Aand is held on the tubular member by means of a disk 23 which is of insulating material and has a central opening that snugly fits over the tubular member l0.

The forward portion 8c of the member 8 carries a cross member 24 which is made of insulating material and upon this cross member 24 there are two teiminal screws one of which is indicated at 25.

' The working parts of the horn, as thus described, are adapted to be inclosed by a cover which is indicated at 26. This cover is provided by an outwardly extending flange 27 atthe lower portion which engages in a suitably formed depression in the spring plate 7. The cover 'is fastened by a screw 28 which extends through an opening in the cover and 'engages with a threaded opening formed in the portion 8d of the member 8.,

The coil 22 has one end thereof connected with the spring contact member 15, the other end of the coil being connected with one of the termt'mal screws such as represented The spring contact plate 17 is by means of a conductor 30"connected with the -other of the terminal screws 25.

The di: hragm 6 has secured thereon a post or piii B1, which extends substantially centrally through the tubular member 10 and is in position to be engaged by the armature as the same is attracted toward the coil when the coil is energized. This movement of the armature imparts a sharp blow to the pin 31. It is the rapid succession of blows which cause the vibration of the armature ywhich in turn causes the emission of sound.

,The member 8 is formed of a metal which has some inherent resiliency, particularly in the upturiied portion 8a. This is an important feature of the construction, for when the armature 14 is rapidly vibrated as the circuit is madeand broken through the coil 22, the upturned portion 8aL provides a resilient mounting for the spring member 13,

and part of th'e rebound of the armature is absorbed by the member 8@l because of its resilient nature. This is of considerable assistance in lengthening the life of the spring 13, and with this construction the breaking of the spring 13 is practically eliminated. lVliei-e the mounting for the spring 13 is rigid the continued iiexing of the spring 13 will eventually cause the springs to break, but with the flexible mounting proposed herein this feature is eliminated.

Having thus described my invention, I claim 1. An electric signaling device comprising a supporting plate, a diaphragm carried by said supporting plate, an electro-magnet carried by the said supporting plate, a portion of said electro-magnet being formed as a strip of metal which is resilient, an armature for said electro-magnet, a spring plate supporting the armature, said spring plate being iii turn supported by the said strip of resilient material, means whereby the movement of the armature imparts vibration to the diaphragm, and a make and break device which opens and closes with the movement of the armature.

2. An electric signaling device comprising a supporting plate, a. diaphragm carried by the supporting plate, a metal member having a bottom portion which lies against the supporting plate and. uptui'ned side portions, a coil secured between the said side portions, an armature above the coil, a spring plate supporting the armature and secured to one of the said upturiied portions, means whereby the movement of the armature may be transmitted tothe diaphragm.

3. An electric signaling device comprising a supporting plate, a diaphragm carried by the supporting plate, a strip metal member havin a bottom portion and outwardly extending sidev portions, the bottom portion of said member being secured to the supporting plate, a coil located between the side portions of said member, said coil having an opening therethrough, a pin carried by the said diaphragm and extending through said opening, 'a platform formed on one of the extending side members, a spring supported on said platform, an armature carriediby said spring and in position to impinge against the said pin, a make and break device which opens and icloses with the movement of the armature.

4. An electric signaling device comprising a supporting plate, a diaphragm carried by the supportlng plate, a. metal member having a portion which lies against the supportinfr p wzrdly, a wire coil secured between said u turned portions, an armature above the coil,

ate and portions which are bent upture from one of the Suid upturned portions of the metal member, a cap nclosing the parts carried by th@ supporting plate said caphnving a portion which fits against the 5 supporting plate, and means extending; through the cap und engaging with one of the side portions of the metal member whereby the cap is secured in place.

In testimony whereof E hereunto ax my signature in the presence of two Witnesses. 10

WILLIAM M. HORTON. 

